... , iron ore and so on.Parameters of Raymond Mill Technical Parameter/Type3R15103R21153R26153R27153R30164R32165R41193R78263R83274R9531Max Feeding Size(mm)≤8≤15≤20≤20≤20≤30 ... just for your reference. Roller Mill (Raymond mill,vertical crusher, multi-roller mill, powder crusher, mill)